diff --git a/remix-lib/index.js b/remix-lib/index.js
index 97a2f68b17..d1ba71cb16 100644
--- a/remix-lib/index.js
+++ b/remix-lib/index.js
@@ -27,6 +27,8 @@ var CodeManager = require('./src/code/codeManager')
 var BreakpointManager = require('./src/code/breakpointManager')
 var TraceManager = require('./src/trace/traceManager')
 
+var UniversalDApp = require('./src/universalDapp')
+
 if (typeof (module) !== 'undefined' && typeof (module.exports) !== 'undefined') {
   module.exports = modules()
 }
@@ -71,6 +73,7 @@ function modules () {
       txListener: txListener,
       txRunner: txRunner,
       typeConversion: typeConversion
-    }
+    },
+    UniversalDApp: UniversalDApp
   }
 }
diff --git a/remix-lib/src/universalDapp.js b/remix-lib/src/universalDapp.js
new file mode 100644
index 0000000000..4ba462cf47
--- /dev/null
+++ b/remix-lib/src/universalDapp.js
@@ -0,0 +1,303 @@
+var async = require('async')
+var ethJSUtil = require('ethereumjs-util')
+var BN = ethJSUtil.BN
+var crypto = require('crypto')
+
+var TxRunner = require('./execution/txRunner')
+var txHelper = require('./execution/txHelper')
+var EventManager = require('./eventManager')
+var executionContext = require('./execution/execution-context')
+
+function UniversalDApp (registry) {
+  this.event = new EventManager()
+  var self = this
+  self._deps = {
+    config: registry.get('config').api
+  }
+  self._txRunnerAPI = {
+    config: self._deps.config,
+    detectNetwork: (cb) => {
+      executionContext.detectNetwork(cb)
+    },
+    personalMode: () => {
+      return self._deps.config.get('settings/personal-mode')
+    }
+  }
+  self.txRunner = new TxRunner({}, self._txRunnerAPI)
+  self.accounts = {}
+  self.resetEnvironment()
+  executionContext.event.register('contextChanged', this.resetEnvironment.bind(this))
+}
+
+UniversalDApp.prototype.resetEnvironment = function () {
+  this.accounts = {}
+  if (executionContext.isVM()) {
+    this._addAccount('3cd7232cd6f3fc66a57a6bedc1a8ed6c228fff0a327e169c2bcc5e869ed49511', '0x56BC75E2D63100000')
+    this._addAccount('2ac6c190b09897cd8987869cc7b918cfea07ee82038d492abce033c75c1b1d0c', '0x56BC75E2D63100000')
+    this._addAccount('dae9801649ba2d95a21e688b56f77905e5667c44ce868ec83f82e838712a2c7a', '0x56BC75E2D63100000')
+    this._addAccount('d74aa6d18aa79a05f3473dd030a97d3305737cbc8337d940344345c1f6b72eea', '0x56BC75E2D63100000')
+    this._addAccount('71975fbf7fe448e004ac7ae54cad0a383c3906055a65468714156a07385e96ce', '0x56BC75E2D63100000')
+    executionContext.vm().stateManager.cache.flush(function () {})
+  }
+  // TODO: most params here can be refactored away in txRunner
+  this.txRunner = new TxRunner(this.accounts, {
+    // TODO: only used to check value of doNotShowTransactionConfirmationAgain property
+    config: this.config,
+    // TODO: to refactor, TxRunner already has access to executionContext
+    detectNetwork: (cb) => {
+      executionContext.detectNetwork(cb)
+    },
+    personalMode: () => {
+      return this.config.get('settings/personal-mode')
+    }
+  })
+  this.txRunner.event.register('transactionBroadcasted', (txhash) => {
+    executionContext.detectNetwork((error, network) => {
+      if (error || !network) return
+      this.event.trigger('transactionBroadcasted', [txhash, network.name])
+    })
+  })
+}
+
+UniversalDApp.prototype.resetAPI = function (transactionContextAPI) {
+  this.transactionContextAPI = transactionContextAPI
+}
+
+UniversalDApp.prototype.createVMAccount = function (privateKey, balance, cb) {
+  this._addAccount(privateKey, balance)
+  executionContext.vm().stateManager.cache.flush(function () {})
+  privateKey = Buffer.from(privateKey, 'hex')
+  cb(null, '0x' + ethJSUtil.privateToAddress(privateKey).toString('hex'))
+}
+
+UniversalDApp.prototype.newAccount = function (password, passwordPromptCb, cb) {
+  if (!executionContext.isVM()) {
+    if (!this.config.get('settings/personal-mode')) {
+      return cb('Not running in personal mode')
+    }
+    passwordPromptCb((passphrase) => {
+      executionContext.web3().personal.newAccount(passphrase, cb)
+    })
+  } else {
+    var privateKey
+    do {
+      privateKey = crypto.randomBytes(32)
+    } while (!ethJSUtil.isValidPrivate(privateKey))
+    this._addAccount(privateKey, '0x56BC75E2D63100000')
+    executionContext.vm().stateManager.cache.flush(function () {})
+    cb(null, '0x' + ethJSUtil.privateToAddress(privateKey).toString('hex'))
+  }
+}
+
+UniversalDApp.prototype._addAccount = function (privateKey, balance) {
+  var self = this
+
+  if (!executionContext.isVM()) {
+    throw new Error('_addAccount() cannot be called in non-VM mode')
+  }
+
+  if (self.accounts) {
+    privateKey = Buffer.from(privateKey, 'hex')
+    var address = ethJSUtil.privateToAddress(privateKey)
+
+    // FIXME: we don't care about the callback, but we should still make this proper
+    executionContext.vm().stateManager.putAccountBalance(address, balance || '0xf00000000000000001', function cb () {})
+    self.accounts['0x' + address.toString('hex')] = { privateKey: privateKey, nonce: 0 }
+  }
+}
+
+UniversalDApp.prototype.getAccounts = function (cb) {
+  var self = this
+
+  if (!executionContext.isVM()) {
+    // Weirdness of web3: listAccounts() is sync, `getListAccounts()` is async
+    // See: https://github.com/ethereum/web3.js/issues/442
+    if (this._deps.config.get('settings/personal-mode')) {
+      return executionContext.web3().personal.getListAccounts(cb)
+    } else {
+      executionContext.web3().eth.getAccounts(cb)
+    }
+  } else {
+    if (!self.accounts) {
+      return cb('No accounts?')
+    }
+
+    cb(null, Object.keys(self.accounts))
+  }
+}
+
+UniversalDApp.prototype.getBalance = function (address, cb) {
+  var self = this
+
+  address = ethJSUtil.stripHexPrefix(address)
+
+  if (!executionContext.isVM()) {
+    executionContext.web3().eth.getBalance(address, function (err, res) {
+      if (err) {
+        cb(err)
+      } else {
+        cb(null, res.toString(10))
+      }
+    })
+  } else {
+    if (!self.accounts) {
+      return cb('No accounts?')
+    }
+
+    executionContext.vm().stateManager.getAccountBalance(Buffer.from(address, 'hex'), function (err, res) {
+      if (err) {
+        cb('Account not found')
+      } else {
+        cb(null, new BN(res).toString(10))
+      }
+    })
+  }
+}
+
+UniversalDApp.prototype.getBalanceInEther = function (address, callback) {
+  var self = this
+  self.getBalance(address, (error, balance) => {
+    if (error) {
+      callback(error)
+    } else {
+      callback(null, executionContext.web3().fromWei(balance, 'ether'))
+    }
+  })
+}
+
+UniversalDApp.prototype.pendingTransactionsCount = function () {
+  return Object.keys(this.txRunner.pendingTxs).length
+}
+
+/**
+  * deploy the given contract
+  *
+  * @param {String} data    - data to send with the transaction ( return of txFormat.buildData(...) ).
+  * @param {Function} callback    - callback.
+  */
+UniversalDApp.prototype.createContract = function (data, confirmationCb, continueCb, promptCb, callback) {
+  this.runTx({data: data, useCall: false}, confirmationCb, continueCb, promptCb, (error, txResult) => {
+    // see universaldapp.js line 660 => 700 to check possible values of txResult (error case)
+    callback(error, txResult)
+  })
+}
+
+/**
+  * call the current given contract
+  *
+  * @param {String} to    - address of the contract to call.
+  * @param {String} data    - data to send with the transaction ( return of txFormat.buildData(...) ).
+  * @param {Object} funAbi    - abi definition of the function to call.
+  * @param {Function} callback    - callback.
+  */
+UniversalDApp.prototype.callFunction = function (to, data, funAbi, confirmationCb, continueCb, promptCb, callback) {
+  this.runTx({to: to, data: data, useCall: funAbi.constant}, confirmationCb, continueCb, promptCb, (error, txResult) => {
+    // see universaldapp.js line 660 => 700 to check possible values of txResult (error case)
+    callback(error, txResult)
+  })
+}
+
+UniversalDApp.prototype.context = function () {
+  return (executionContext.isVM() ? 'memory' : 'blockchain')
+}
+
+UniversalDApp.prototype.getABI = function (contract) {
+  return txHelper.sortAbiFunction(contract.abi)
+}
+
+UniversalDApp.prototype.getFallbackInterface = function (contractABI) {
+  return txHelper.getFallbackInterface(contractABI)
+}
+
+UniversalDApp.prototype.getInputs = function (funABI) {
+  if (!funABI.inputs) {
+    return ''
+  }
+  return txHelper.inputParametersDeclarationToString(funABI.inputs)
+}
+
+/**
+ * This function send a tx without alerting the user (if mainnet or if gas estimation too high).
+ * SHOULD BE TAKEN CAREFULLY!
+ *
+ * @param {Object} tx    - transaction.
+ * @param {Function} callback    - callback.
+ */
+UniversalDApp.prototype.silentRunTx = function (tx, cb) {
+  if (!executionContext.isVM()) return cb('Cannot silently send transaction through a web3 provider')
+  this.txRunner.rawRun(
+  tx,
+  (network, tx, gasEstimation, continueTxExecution, cancelCb) => { continueTxExecution() },
+  (error, continueTxExecution, cancelCb) => { if (error) { cb(error) } else { continueTxExecution() } },
+  (okCb, cancelCb) => { okCb() },
+  cb)
+}
+
+UniversalDApp.prototype.runTx = function (args, confirmationCb, continueCb, promptCb, cb) {
+  const self = this
+  async.waterfall([
+    function getGasLimit (next) {
+      if (self.transactionContextAPI.getGasLimit) {
+        return self.transactionContextAPI.getGasLimit(next)
+      }
+      next(null, 3000000)
+    },
+    function queryValue (gasLimit, next) {
+      if (args.value) {
+        return next(null, args.value, gasLimit)
+      }
+      if (args.useCall || !self.transactionContextAPI.getValue) {
+        return next(null, 0, gasLimit)
+      }
+      self.transactionContextAPI.getValue(function (err, value) {
+        next(err, value, gasLimit)
+      })
+    },
+    function getAccount (value, gasLimit, next) {
+      if (args.from) {
+        return next(null, args.from, value, gasLimit)
+      }
+      if (self.transactionContextAPI.getAddress) {
+        return self.transactionContextAPI.getAddress(function (err, address) {
+          next(err, address, value, gasLimit)
+        })
+      }
+      self.getAccounts(function (err, accounts) {
+        let address = accounts[0]
+
+        if (err) return next(err)
+        if (!address) return next('No accounts available')
+        if (executionContext.isVM() && !self.accounts[address]) {
+          return next('Invalid account selected')
+        }
+        next(null, address, value, gasLimit)
+      })
+    },
+    function runTransaction (fromAddress, value, gasLimit, next) {
+      var tx = { to: args.to, data: args.data.dataHex, useCall: args.useCall, from: fromAddress, value: value, gasLimit: gasLimit, timestamp: args.data.timestamp }
+      var payLoad = { funAbi: args.data.funAbi, funArgs: args.data.funArgs, contractBytecode: args.data.contractBytecode, contractName: args.data.contractName, contractABI: args.data.contractABI, linkReferences: args.data.linkReferences }
+      var timestamp = Date.now()
+      if (tx.timestamp) {
+        timestamp = tx.timestamp
+      }
+
+      self.event.trigger('initiatingTransaction', [timestamp, tx, payLoad])
+      self.txRunner.rawRun(tx, confirmationCb, continueCb, promptCb,
+        function (error, result) {
+          let eventName = (tx.useCall ? 'callExecuted' : 'transactionExecuted')
+          self.event.trigger(eventName, [error, tx.from, tx.to, tx.data, tx.useCall, result, timestamp, payLoad])
+
+          if (error && (typeof (error) !== 'string')) {
+            if (error.message) error = error.message
+            else {
+              try { error = 'error: ' + JSON.stringify(error) } catch (e) {}
+            }
+          }
+          next(error, result)
+        }
+      )
+    }
+  ], cb)
+}
+
+module.exports = UniversalDApp